All categories

3 years ago

You use 4 boxes of rice to serve 13 people. If you want to serve 39 people, what should you do?

Mathematics

2 answers:

SSSSS [86.1K]3 years ago

8 0

YOU SHOULD MAKE MORE RICE
3x's more rice!

Natalka [10]3 years ago

8 0

Answer:

Use $3$ times as many boxes of rice

Step-by-step explanation:

we know that

Using proportion

$\frac{4}{13}\frac{boxes}{people}=\frac{x}{39}\frac{boxes}{people} \\ \\x=39*4/13\\ \\x=12\ boxes$

original quantity of boxes -----> $4$

boxes needed -----> $12$

$12=3*(4)$

therefore

Use $3$ times as many boxes of rice

You might be interested in

A new company spent $9,399.74 on 24 tablets for their employees. How much did each tablet cost? Round your answer to the nearest

Nitella [24]

$391.655 or $391.66 per table

8 0

3 years ago

Read 2 more answers

Find a quadratic polynomial with integer coefficients which has x = 2/9, ± SQRT23/9 as its real zeros.

melomori [17]

Answer:

The quadratic polynomial with integer coefficients is $y = 81\cdot x^{2}-36\cdot x -19$ .

Step-by-step explanation:

Statement is incorrectly written. Correct form is described below:

Find a quadratic polynomial with integer coefficients which has the following real zeros: $x = \frac{2}{9}\pm \frac{\sqrt{23}}{9}$ .

Let be $r_{1} = \frac{2}{9}+\frac{\sqrt{23}}{9}$ and $r_{2} = \frac{2}{9}-\frac{\sqrt{23}}{9}$ roots of the quadratic function. By Algebra we know that:

$y = (x-r_{1})\cdot (x-r_{2}) = x^{2}-(r_{1}+r_{2})\cdot x +r_{1}\cdot r_{2}$ (1)

Then, the quadratic polynomial is:

$y = x^{2}-\frac{4}{9}\cdot x -\frac{19}{81}$

$y = 81\cdot x^{2}-36\cdot x -19$

The quadratic polynomial with integer coefficients is $y = 81\cdot x^{2}-36\cdot x -19$ .

5 0

2 years ago

I need serious answers ppl keep putting those links

ohaa [14]

Answer:

Roman

Step-by-step explanation:

An easy way to solve this is looking at whether the line has a positive or negative slope. We read graphs from left to right so if the line is increasing from left to right, it has a positive slope while a line decreasing from left to right has a negative slope. Since the line shown is decreasing from left to right, it will have a negative slope and Roman is the only one out of the two that shows a negative slope. To check to see if he's correct, we can check the y-intercept. The y-intercept of the line is 8 and Roman also has 8 written in the expression. Hence, meaning Roman is correct.

Best of Luck!

7 0

2 years ago

In a survey, 150 people were asked if they smoke and whether or not they exercise regularly (more than twice a week). The result

s2008m [1.1K]

(a) 28%

(b) 24%

When calculating the total amount of people it come out to 150.

According to the table 42 people smoke. 42/150 is 28%

According to the table 36 people exercise regularly. 36/150 is 24%

7 0

2 years ago

Team rose over run canoed 15 3/4 miles in 2 1/4 hours what was their average rate of speed in miles per hour

Ira Lisetskai [31]

To calculate the speed, divide 15.75 by 2.25 and you get 7 mph.

3 0

3 years ago